DISPLAY SYSTEM FOR AVIONIC AND NON-AVIONIC APPLICATIONS

• US 20100253692A1
• Filed: 07/02/2008
• Published: 10/07/2010
• Est. Priority Date: 07/05/2007
• Status: Active Grant

• Current Assignee: Airbus Operations (European Aeronautic Defence and Space Company EADS NV)
• Original Assignee: Airbus Operations (European Aeronautic Defence and Space Company EADS NV)
• Inventors: Cheymol, Lionel, Innocent, Simon, Foucart, Vincent
• Granted Patent: US 8,743,129 B2
• Time in Patent Office: Days
• US Class Current: 345/522
• CPC Class Codes: G06F 3/1454 involving copying of the display data of a local workstation or window to a remote workstation or window so that an actual copy of the data is displayed simultaneously on two or more displays, e.g. teledisplay
• CPC Class Codes: G09G 2380/12 Avionics applications
• CPC Class Codes: G09G 5/006 Details of the interface to the display terminal specific for a display terminal using a CRT G09G1/167; using a flat panel G09G3/2096; circuits for interfacing with colour displays G09G5/04
• CPC Class Codes: H04L 63/105 Multiple levels of security

Abstract

The present invention relates to a display device for a glass cockpit of an aircraft, intended to provide video streams to a plurality of viewing screens of said glass cockpit, said aircraft being partitioned into a secured area, a so-called avionic world (AW), and a non-secured area, a so-called open world (OW), said system comprising at least one first port intended to receive first data to be displayed from a system (210, 310, 410) belonging to the avionic area and at least one second port intended to receive second data to be displayed from a system (220, 320, 420) belonging to the open world, the display device comprising:

• • predetermined hardware resources allocated to the processing of the second data;
  • a processor (241, 341, 441), belonging to the avionic area, adapted to controlling the hardware resources used by said processing and interrupting this processing if said hardware resources used exceed said allocated resources.

Claims

1. A display system for a glass cockpit of an aircraft, intended for providing video screens to a plurality of viewing screens of said instrument panel, said aircraft being partitioned into a secured area, a so-called avionic world (AW), and a non-secured area, a so-called open world (OW), said system comprising at least one first port intended to receive the first data to be displayed of a system (210, 310, 410), belonging to the avionic area, a so-called avionic system, and at least one second port intended to receive second data to be displayed from a system (220, 320, 420) belonging to the open world, a so-called non-avionic system, characterized in that it comprises:

predetermined hardware resources allocated to the processing of the second data;

a processor (241, 341, 441), belonging to the avionic area, adapted for monitoring the hardware resources used by said processing and interrupting this processing if said hardware resources used exceed said allocated resources.

2. The display system according to claim 1, characterized in that the hardware resources are memory areas or memory sizes.

3. The display system according to claim 1, characterized in that the hardware resources are execution times, frame frequencies or frame durations.

4. The display system according to claim 1, characterized in that the hardware resources are display areas on at least one of said viewing screens.

5. The display system according to claim 1, characterized in that it comprises a video buffer (342) intended to store at least one video stream originating from the non-avionic system, said buffer being controlled by said processor.

6. The display system according to claim 1, characterized in that it comprises a graphic card (343, 443) adapted to receiving graphic commands from the processor in order to generate at least one video stream relating to symbology, said graphic commands being generated by the processor from the data to be displayed of the avionic system.

7. The display system according to any of claims 5 and 6, characterized in that it comprises a video mixer adapted to combining at least said video stream relating to the symbology and the video stream originating from the non-avionic system in order to generate at least one video stream sent to one of said viewing screens.

8. An information system loaded on-board an aircraft, partitioned into a secured area, a so-called avionic world (AW), and a non-secured area, a so-called open world (OW), said information system comprising a display system according to any of the preceding claims, an avionic system (210, 310, 410) in the avionic area and a non-avionic system (220, 320, 420) in the open world, characterized in that it further comprises a control peripheral (270, 370, 470) connected to the avionic system by means of a bidirectional bus and to the non-avionic system by a unidirectional bus, directed from the control peripheral towards the non-avionic system.

9. The on-board information system according to claim 8, depending on claim 5, characterized in that it further comprises a video concentrator (380) adapted to receiving a video stream from a second avionic system (330) as well as a video stream from the non-avionic system in order to generate at least one video stream sent to said video buffer.

10. The on-board information system according to claim 8, characterized in that the video stream of the non-avionic system is transmitted to a conversion gateway (490) via an Ethernet link (425), said gateway being connected to said display system through an Arinc 429 link (495) and being adapted for converting Ethernet frames into words with Arinc 429 format.